/* Enhanced Puzzle Solver CSS for NeoCityOS */

.puzzle-solver-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.9);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10000;
    backdrop-filter: blur(5px);
}

.puzzle-solver-modal-content {
    background: linear-gradient(135deg, #1a1a1a 0%, #2a2a2a 100%);
    border: 2px solid #00f7ff;
    border-radius: 15px;
    padding: 30px;
    color: #00f7ff;
    font-family: 'Orbitron', sans-serif;
    max-width: 800px;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: 0 0 30px rgba(0, 247, 255, 0.3);
    animation: modalSlideIn 0.3s ease-out;
}

@keyframes modalSlideIn {
    from {
        opacity: 0;
        transform: translateY(-50px) scale(0.9);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.puzzle-solver-modal-content h3 {
    margin-top: 0;
    border-bottom: 2px solid #00f7ff;
    padding-bottom: 15px;
    font-size: 24px;
    text-align: center;
    text-shadow: 0 0 10px rgba(0, 247, 255, 0.5);
}

/* Puzzle Container */
.puzzle-container {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.puzzle-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 15px;
}

.puzzle-header h3 {
    margin: 0;
    font-size: 28px;
    background: linear-gradient(45deg, #00f7ff, #51cf66);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.puzzle-controls {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.control-btn {
    background: linear-gradient(135deg, #2a2a2a 0%, #3a3a3a 100%);
    color: #00f7ff;
    border: 2px solid #00f7ff;
    padding: 12px 20px;
    border-radius: 8px;
    font-family: 'Orbitron', sans-serif;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.3s ease;
    text-transform: uppercase;
    font-size: 12px;
    letter-spacing: 1px;
    position: relative;
    overflow: hidden;
}

.control-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(0, 247, 255, 0.2), transparent);
    transition: left 0.5s;
}

.control-btn:hover::before {
    left: 100%;
}

.control-btn:hover {
    background: linear-gradient(135deg, #00f7ff 0%, #00e6e6 100%);
    color: #000;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 247, 255, 0.4);
}

.control-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

.control-btn:disabled:hover {
    background: linear-gradient(135deg, #2a2a2a 0%, #3a3a3a 100%);
    color: #00f7ff;
    transform: none;
    box-shadow: none;
}

/* Puzzle Board */
.puzzle-board {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 400px;
    background: rgba(0, 247, 255, 0.05);
    border-radius: 10px;
    padding: 20px;
    border: 1px solid rgba(0, 247, 255, 0.2);
}

/* Puzzle Info */
.puzzle-info {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
}

#puzzle-stats {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
}

.stat-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    background: rgba(0, 247, 255, 0.1);
    padding: 10px 15px;
    border-radius: 8px;
    border: 1px solid rgba(0, 247, 255, 0.3);
    min-width: 80px;
}

.stat-label {
    font-size: 12px;
    color: #888;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.stat-value {
    font-size: 18px;
    font-weight: bold;
    color: #00f7ff;
    text-shadow: 0 0 5px rgba(0, 247, 255, 0.5);
}

/* Difficulty Controls */
.difficulty-controls {
    display: flex;
    gap: 5px;
}

.difficulty-btn {
    background: rgba(0, 247, 255, 0.1);
    color: #00f7ff;
    border: 1px solid rgba(0, 247, 255, 0.3);
    padding: 8px 15px;
    border-radius: 5px;
    font-family: 'Orbitron', sans-serif;
    font-size: 12px;
    cursor: pointer;
    transition: all 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.difficulty-btn:hover {
    background: rgba(0, 247, 255, 0.2);
    transform: translateY(-1px);
}

.difficulty-btn.active {
    background: #00f7ff;
    color: #000;
    font-weight: bold;
}

/* Puzzle Type Buttons */
.puzzle-type-controls {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
    justify-content: center;
}

.puzzle-type-btn {
    background: rgba(0, 247, 255, 0.1);
    color: #00f7ff;
    border: 2px solid rgba(0, 247, 255, 0.3);
    padding: 12px 20px;
    border-radius: 8px;
    font-family: 'Orbitron', sans-serif;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.3s ease;
    text-transform: uppercase;
    font-size: 12px;
    letter-spacing: 1px;
}

.puzzle-type-btn:hover {
    background: rgba(0, 247, 255, 0.2);
    transform: translateY(-2px);
}

.puzzle-type-btn.active {
    background: #00f7ff;
    color: #000;
    box-shadow: 0 0 15px rgba(0, 247, 255, 0.5);
}

/* Sudoku Board */
.sudoku-board {
    display: grid;
    grid-template-columns: repeat(9, 1fr);
    gap: 2px;
    background: #00f7ff;
    padding: 3px;
    border-radius: 8px;
    max-width: 500px;
    margin: 0 auto;
    box-shadow: 0 0 20px rgba(0, 247, 255, 0.3);
}

.sudoku-row {
    display: contents;
}

.sudoku-cell {
    background: #1a1a1a;
    color: #00f7ff;
    padding: 12px;
    text-align: center;
    font-family: 'Orbitron', sans-serif;
    font-weight: bold;
    min-height: 45px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    position: relative;
}

.sudoku-cell:hover {
    background: rgba(0, 247, 255, 0.1);
}

.sudoku-cell.original {
    color: #51cf66;
    text-shadow: 0 0 5px rgba(81, 207, 102, 0.5);
}

.sudoku-cell.editable {
    color: #00f7ff;
}

.sudoku-cell.editable:hover {
    background: rgba(0, 247, 255, 0.15);
}

.sudoku-input {
    width: 100%;
    height: 100%;
    background: transparent;
    border: none;
    color: #00f7ff;
    font-family: 'Orbitron', sans-serif;
    font-weight: bold;
    text-align: center;
    font-size: 18px;
    outline: none;
}

.sudoku-input:focus {
    background: rgba(0, 247, 255, 0.1);
    border-radius: 5px;
}

/* Box highlighting for Sudoku */
.box-0-0, .box-0-1, .box-0-2, .box-1-0, .box-1-1, .box-1-2, .box-2-0, .box-2-1, .box-2-2 {
    border: 1px solid rgba(0, 247, 255, 0.3);
}

/* 8-Puzzle Board */
.eight-puzzle-board {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 8px;
    max-width: 350px;
    margin: 0 auto;
    padding: 20px;
    background: rgba(0, 247, 255, 0.05);
    border-radius: 15px;
    border: 2px solid rgba(0, 247, 255, 0.2);
}

.puzzle-cell {
    background: linear-gradient(135deg, #00f7ff 0%, #00e6e6 100%);
    color: #000;
    padding: 25px;
    text-align: center;
    font-family: 'Orbitron', sans-serif;
    font-weight: bold;
    font-size: 28px;
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
    position: relative;
    overflow: hidden;
}

.puzzle-cell::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(45deg, transparent, rgba(255, 255, 255, 0.1), transparent);
    transform: translateX(-100%);
    transition: transform 0.6s;
}

.puzzle-cell:hover::before {
    transform: translateX(100%);
}

.puzzle-cell:hover {
    background: linear-gradient(135deg, #51cf66 0%, #40c057 100%);
    transform: scale(1.05);
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.3);
}

.puzzle-cell.empty {
    background: linear-gradient(135deg, #2a2a2a 0%, #3a3a3a 100%);
    color: #00f7ff;
    cursor: default;
    box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.3);
}

.puzzle-cell.empty:hover {
    transform: none;
    background: linear-gradient(135deg, #2a2a2a 0%, #3a3a3a 100%);
}

.empty-symbol {
    font-size: 24px;
    opacity: 0.7;
}

/* Crossword Board */
.crossword-board {
    display: grid;
    grid-template-columns: repeat(15, 1fr);
    gap: 2px;
    background: #00f7ff;
    padding: 3px;
    border-radius: 8px;
    max-width: 700px;
    margin: 0 auto;
    box-shadow: 0 0 20px rgba(0, 247, 255, 0.3);
}

.crossword-row {
    display: contents;
}

.crossword-cell {
    background: #1a1a1a;
    color: #00f7ff;
    padding: 10px;
    text-align: center;
    font-family: 'Orbitron', sans-serif;
    font-weight: bold;
    min-height: 35px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.crossword-cell.empty {
    background: #2a2a2a;
}

.crossword-cell.filled {
    background: linear-gradient(135deg, #51cf66 0%, #40c057 100%);
    color: #000;
    font-weight: bold;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
}

/* Sliding Puzzle Board */
.sliding-puzzle-board {
    display: grid;
    gap: 6px;
    max-width: 400px;
    margin: 0 auto;
    padding: 20px;
    background: rgba(0, 247, 255, 0.05);
    border-radius: 15px;
    border: 2px solid rgba(0, 247, 255, 0.2);
}

.sliding-cell {
    background: linear-gradient(135deg, #00f7ff 0%, #00e6e6 100%);
    color: #000;
    padding: 20px;
    text-align: center;
    font-family: 'Orbitron', sans-serif;
    font-weight: bold;
    font-size: 20px;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 3px 6px rgba(0, 0, 0, 0.2);
    position: relative;
    overflow: hidden;
}

.sliding-cell::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(45deg, transparent, rgba(255, 255, 255, 0.1), transparent);
    transform: translateX(-100%);
    transition: transform 0.6s;
}

.sliding-cell:hover::before {
    transform: translateX(100%);
}

.sliding-cell:hover {
    background: linear-gradient(135deg, #51cf66 0%, #40c057 100%);
    transform: scale(1.03);
    box-shadow: 0 6px 12px rgba(0, 0, 0, 0.3);
}

.sliding-cell.empty {
    background: linear-gradient(135deg, #2a2a2a 0%, #3a3a3a 100%);
    color: #00f7ff;
    cursor: default;
    box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.3);
}

.sliding-cell.empty:hover {
    transform: none;
    background: linear-gradient(135deg, #2a2a2a 0%, #3a3a3a 100%);
}

/* Messages */
.puzzle-message {
    position: fixed;
    top: 20px;
    right: 20px;
    padding: 15px 25px;
    border-radius: 8px;
    font-family: 'Orbitron', sans-serif;
    font-weight: bold;
    z-index: 10001;
    transform: translateX(100%);
    opacity: 0;
    transition: all 0.3s ease;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
    max-width: 300px;
}

.puzzle-message.show {
    transform: translateX(0);
    opacity: 1;
}

.puzzle-message.success {
    background: linear-gradient(135deg, #51cf66 0%, #40c057 100%);
    color: #000;
    border-left: 4px solid #2b8a3e;
}

.puzzle-message.error {
    background: linear-gradient(135deg, #ff6b6b 0%, #fa5252 100%);
    color: #fff;
    border-left: 4px solid #c92a2a;
}

.puzzle-message.info {
    background: linear-gradient(135deg, #00f7ff 0%, #00e6e6 100%);
    color: #000;
    border-left: 4px solid #00b3b3;
}

/* Animations */
@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateX(100px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideOut {
    from {
        opacity: 1;
        transform: translateX(0);
    }
    to {
        opacity: 0;
        transform: translateX(100px);
    }
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
}

@keyframes glow {
    0%, 100% {
        box-shadow: 0 0 5px rgba(0, 247, 255, 0.5);
    }
    50% {
        box-shadow: 0 0 20px rgba(0, 247, 255, 0.8);
    }
}

/* Responsive Design */
@media (max-width: 768px) {
    .puzzle-solver-modal-content {
        margin: 20px;
        padding: 20px;
        max-width: calc(100vw - 40px);
    }
    
    .puzzle-header {
        flex-direction: column;
        text-align: center;
    }
    
    .puzzle-controls {
        justify-content: center;
    }
    
    .control-btn {
        padding: 10px 15px;
        font-size: 11px;
    }
    
    .puzzle-info {
        flex-direction: column;
        text-align: center;
    }
    
    .sudoku-board {
        max-width: 350px;
    }
    
    .sudoku-cell {
        padding: 8px;
        min-height: 35px;
        font-size: 14px;
    }
    
    .eight-puzzle-board {
        max-width: 280px;
    }
    
    .puzzle-cell {
        padding: 20px;
        font-size: 24px;
    }
    
    .crossword-board {
        max-width: 500px;
        grid-template-columns: repeat(12, 1fr);
    }
    
    .crossword-cell {
        padding: 8px;
        min-height: 30px;
        font-size: 12px;
    }
    
    .sliding-puzzle-board {
        max-width: 300px;
    }
    
    .sliding-cell {
        padding: 15px;
        font-size: 16px;
    }
}

@media (max-width: 480px) {
    .puzzle-solver-modal-content {
        margin: 10px;
        padding: 15px;
    }
    
    .sudoku-board {
        max-width: 280px;
    }
    
    .sudoku-cell {
        padding: 6px;
        min-height: 30px;
        font-size: 12px;
    }
    
    .eight-puzzle-board {
        max-width: 220px;
    }
    
    .puzzle-cell {
        padding: 15px;
        font-size: 20px;
    }
    
    .crossword-board {
        max-width: 350px;
        grid-template-columns: repeat(10, 1fr);
    }
    
    .crossword-cell {
        padding: 6px;
        min-height: 25px;
        font-size: 10px;
    }
    
    .sliding-puzzle-board {
        max-width: 250px;
    }
    
    .sliding-cell {
        padding: 12px;
        font-size: 14px;
    }
}

/* Loading Animation */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(0, 247, 255, 0.3);
    border-radius: 50%;
    border-top-color: #00f7ff;
    animation: spin 1s ease-in-out infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

/* Completion Animation */
.completed {
    animation: pulse 0.5s ease-in-out 3, glow 2s ease-in-out infinite;
}

/* Hover Effects */
.hover-glow:hover {
    animation: glow 1s ease-in-out infinite;
}

/* Focus States */
.control-btn:focus,
.puzzle-type-btn:focus,
.difficulty-btn:focus {
    outline: 2px solid #00f7ff;
    outline-offset: 2px;
}

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}